Missing map completion rewards

I just did map completions in Timberline Falls and Sparkfly Fen, neither of them gave the usual charge/key (all other rewards were fine). My character was level 70 +, and before then I was getting the charge/key from completed maps.

Did something change that I missed, or is this a bug?

Edit: nevermind, I found the reason on GW2 twitter. so glad I wasted my time doing those maps because it wasn't posted here.